Call her twice a week. Just talk about stuff. Don’t ask her out again. What you’re waiting for is for her to start calling you or to suggest a next step, like a dinner.
If she starts calling you then trade off on who calls who unless you find she’s always calling you. If this starts happening then ask her out.
I didn’t learn until my thirties just what a treasure it is to be able to call someone you’re interested in regularly. Don’t look that gift horse in the mouth.